智能合约的返回地址函数返回承诺对象而不是松露测试中的地址

Question

Hi I have an address return function that works in remix but when I try to run it in a truffle test it gives me a promise object.

If I could have the truffle test return an address like it does in the solidity code that would be ideal or if I can access the promise object to give me my address. I have tried to add ".toString()" to the promise object but it does not give me the address

This is how I am trying to call the return function and save it to a variable within the truffle test

const newFractionContractAddress = await mainContract.getFractionContractAddress(0, {from: accounts[0]});

the solidity return function looks like this

function getFractionContractAddress(uint _index) public view returns(address) {
    return address(nftDeposits[msg.sender].deposits[_index].fractionContract);
}

Thanks

Answer 1

Sending EVM transactions and waiting for the result of how they're processed is, by design, asynchronous. JavaScript uses Promises to be able to handle asynchronous operations.

The Promise resolves to a string representing the address, which you are correctly retrieving using the await keyword.